I plan on supporting the top of the doors with a normal track siliconed within the new frame. It won't be doing much more than holding the glass in place, where as the bottom track would be taking the full weight and force of them. Sorry for the delayed reply. Overtime is great on the wallet but I've had hardly enough time to crawl my way back into bed before having to fall out of it 5 hours later to pull another open-to-close shift. At least I get to somewhat sleep in tomorrow before class and training. Ugh.